Hesperantha coccinea, the river lily, or crimson flag lily,[2] synonym Schizostylis coccinea, is a species of flowering plant in the iris family Iridaceae, native to Southern Africa and Zimbabwe.

The flowers are red, occasionally pink or white, 30–35 mm long, with six petals; they are produced four to ten alternately on a spike in late summer to autumn.

The Latin specific epithet coccinea means “bright red”.

[4] Hesperantha coccinea is cultivated as an ornamental plant in gardens for its flowers, It is often used in floristry.

Numerous cultivars are available, of which the following have gained the Royal Horticultural Society's Award of Garden Merit:-[6] This Iridaceae article is a stub.